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Do silver fir woolly adelgids ( Dreyfusia nordmannianae) facilitate pathogen infestation with Neonectria neomacrospora on Christmas trees ( Abies nordmanniana )?

hal.structure.identifierDepartment of Geosciences and Natural Resource Management [Copenhagen] [IGN]
dc.contributor.authorXU, Jing
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierDepartment of Geosciences and Natural Resource Management [Copenhagen] [IGN]
dc.contributor.authorBUDDE, Katharina Birgit
hal.structure.identifierDepartment of Geosciences and Natural Resource Management [Copenhagen] [IGN]
dc.contributor.authorHANSEN, Ole K.
hal.structure.identifierDepartment of Geosciences and Natural Resource Management [Copenhagen] [IGN]
dc.contributor.authorTHOMSEN, Iben M.
hal.structure.identifierDepartment of Geosciences and Natural Resource Management [Copenhagen] [IGN]
dc.contributor.authorRAVN, Hans Peter
hal.structure.identifierDepartment of Geosciences and Natural Resource Management [Copenhagen] [IGN]
dc.contributor.authorNIELSEN, Ulrik B.
dc.date.issued2018
dc.identifier.issn0378-1127
dc.description.abstractEnIn Europe, the most widely used Christmas tree species, Abies nordmanniana, has a long history of infestation with the adelgid Dreyfusia nordmannianae. Since 2011, the species has furthermore been increasingly damaged by the fungus Neonectria neomacrospora. The objective was to study whether infestations by N. neomacrospora were facilitated by the presence of adelgids in Nordmann fir and to explore the genetic components of this potential interplay. The damage caused by D. nordmannianae and N. neomacrospora in two Nordmann fir clonal seed orchards in Denmark was evaluated in 2014, and an experimental infestation was conducted to test the performance of Nordmann fir somatic embryogenesis-derived trees exposed to N. neomacrospora and D. nordmannianae individually or in combination by setting up an artificial infestation chamber. The genetic correlation between the two diseases was 0.54 at two clonal seed orchards, indicating that the trees susceptible to N. neomacrospora were also susceptible to D. nordmannianae or vice versa. In the experimental test, only trees in the treatment with both D. nordmannianae and N. neomacrospora developed needle loss and dieback symptoms. Thus, both the field evaluations and the experimental test revealed an interplay between D. nordmannianae and N. neomacrospora damage on Nordmann fir trees. Future studies should explore in more detail how D. nordmannianae interacts with N. neomacrospora. Our findings and future studies on this topic could have important implications for suitable breeding programs for Nordmann fir Christmas trees and forest pest management.
dc.language.isoen
dc.publisherElsevier
dc.subject.engenetic correlation
dc.subject.enspatial analysis
dc.subject.entripartite interactions
dc.title.enDo silver fir woolly adelgids ( Dreyfusia nordmannianae) facilitate pathogen infestation with Neonectria neomacrospora on Christmas trees ( Abies nordmanniana )?
dc.typeArticle de revue
dc.identifier.doi10.1016/j.foreco.2018.05.006
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalForest Ecology and Management
bordeaux.page396-405
bordeaux.volume424
bordeaux.peerReviewedoui
hal.identifierhal-02621037
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02621037v1
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